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SAMUEL WOODRUFF AND n. D. BEACH, OE HARTFORD, CONNECTICUT.

Letters .Patent No. 82,371, dated September 22, 1868.

IMPROVEMENT IN PUMPS.

@Lts .rlgml referat tu in tiges: tetters atmi mit mating part nf' the stime.

TO ALL WHOM IT MAY CONCERN:

Be it known that we,'SA1iIUEL WOODRUF and H. B. BEACH, of Hartford, in thecounty of Hartford, and Statel of Connecticut, have invented a new and improved Pump; and we do herebydeclare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art-to make and use the same, reference being had to the accompanyingvdrawings, forminga part of this specification. v This invention relates to a new and useful improvement in a pump, for which Letters Patent were granted to William Wright, November 15, 1859; The presentinv'eution'relatesvto the valvular arrangement of the pump, as hereinafter fully shown and described, whereby the pump is rendered m'uch more certainA in its action than hitherto, practical diicnlties being in the way of the perfect operation of the pump as originally patented.

In the accompanying sheet of drawings- I Figure l is a vertical section of onr'invention, taken in the line z fig, 2.

' Figure 2, a horizontal section of the same, taken in the line y y, fig. 1.

Similar letters of reference indicate corresponding parts. I p

The'pump is constructed with two barrels, A B, one, A, being suiciently larger in diameter than the other, B, to admit of a requisite space, a, between them. The inner barrel, B, is the working one, and contains the piston C, provided with a double-beat valve, as in the original patented pump previously alluded to.

The upper end of the space et, between the two pump-barrels, is provided'with a series of valves, D, of p uppet, or other similar kind, and in the lower part of the exterior barrel A, a'bove the water-induction openings, b, there is a series or-plurality of valves, E, arranged at the bottom of the chamber F, which occupies the space between said valve and the lower end of the cylinder B.

The interior-working cylinder B is considerably shorter -than the exteriorcylinder A, as shown clearly in ig. 1.

So far as the operation of the pump isconeerned, in avtheoretical point of View, the invention is the same as the pump originally patented, but the original pump, instead of having a'plnrality of valves, D E, as in the present invention, is provided with double-beat valves, and these, in consequence of the large diameter of the bands A B, are very pondorous and liable to stick, and, besides this, .there is a great difficulty in having the valves made of the precise weight necessary to cause them to vwork in a balanced state, and hence the operation of the original pump has not proved to be an entire success. I I

i rlhis resultis due, chiefly, to the large size of the pump, the exterior barrel being about seven (7) feet in. diameter, the pump beingdesigned for operation on a large scale. l

The present improvement elfectually obviates the diiiiculty above alluded to, for in case one-half the num 'ber of valves, comprising one or both series, should stick during one or two strokes of the piston, the operation Vof the pump would not be appreciably affected, whereas, in the original pump, the sticking of the double-beat valves (reference'being had more especially to the onev adjoining the upper end of the ivorking-cylinder) would cause the passage. of the water through the pump' to be'obstrncted. The piston, being comparatively small in diameter, may be provided with'a double-beat valve, as a single small valve is not liable to the vobjections ofl aysingle large one. i

Having thus described our invention, what'we claim as new, and desire to secure by Letters Patent, is.- The arrangement of the series of valves D and E in relation to cylinder B, annular chamber a, and chamber F, substantially as described, lfor the purpose specified. i

The above specification of our invention signed by us, this 7th day of April, 1868.

, v ,SAML yWOODBJHE, H. E. BEACH.

Witnesses:

E. J. MURPHY, H. L. BEACH. 

